Chapter 14 – Semiconductor Electronics: Materials, Devices and Simple Circuits
Semiconductor electronics focuses on materials like silicon and germanium whose conductivity can be controlled through doping, creating n-type and p-type semiconductors. When these are combined, they form a p-n junction, which is the basis of devices like diodes and transistors. Diodes allow current to flow in one direction and are used in rectifiers, while transistors act as switches and amplifiers in electronic circuits. The chapter also introduces special devices like Zener diodes and LEDs, explaining their functions in voltage regulation and light emission. Overall, it highlights how semiconductor devices are used to build simple circuits and form the backbone of modern electronic systems. And it is important for Class 12 board exams and competitive exams like NEET and JEE.
Semiconductor Class 12 NCERT
